Deep-Well Pump. Page: 2 of 4
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UNITED STATES PATENT OFFICE.
BENJAMIN ANDREWS, OF HOUSTON, TEXAS.
DEEP-WELL PUMP.1,313,245.
Specification of Letters Patent.
Patented Aug. 19,1919.
Application filed May 10, 1918. Serial No. 233.625.
.To all whom it may concern:
Be it known that I, BrENAMIN ANDREWS,
a citizen of the United States, and resid-
ing at 1Houston, in the county of 1-arris
5 and State of Texas, have invented new and
useful Improvements in Deep-Well Pumps,
of which the following is a specification.
My invention relates to deep well pumps.
particularly to such pumps employed for
10 pumping oil, and is an improvement on
the pump described in my prior Patent No.
1,013.579. granted January 2, 1912.
As stated. in my prior patent, pumps as
commonly used for pumping oil from deap
15 wells give trouble and, are inefficient owing
to the accumulation of sand in the working
barely. This sand flows into the pump with
the oil and tends to accumulate in the work-
ing barrel,'. particularly around the valves.
20 thereby materially reducing the efficiency of
the pump and the production of oil. The
object of my invention, as in my prior pat-
ent, is to provide ineans for removing and
preventing the accumulation of such sand.
25 More particularly the object of the present
invention is to provide an improved ar-
rangement whereby the accumulation of
sand in the main working barrel and around
the lower va'ye forming a part of such bar-
30 rel, will be prevented; also. to provide an
arrangement which will be simple in con-
struction, durable and efficient. A further
object of my invention is to provide an ar-
rangement in which the cleaning fluid em-
35 ployed for flushing out the sand will also
operate to prevent sand getting in between
the piston and the working barrel. A still
further object is to provide ah arrangement
which will obviate the use of pumps or
40 other pressure means at the surface of the
ground for flowing the cleaning or flushing
fluid into the well.
In the drawing accompanying and form-
ing a part of this specification I have illus-
45 trated the preferred embodiment of my in-
vention. Referring to this drawing:
Figure 1 shows a vertical section of a
well with my improved apparatus installed
therein, the pistons being shown near their
50 lower position;
Fig. 2 is a detail view showing the pistons
in raised position;.
Fig. 3 is an enlarged section view of the.
valve mechanism forming a. pact of the main
55 working barrel;IFig. 4 is a transverse section view taken
on the line 4---4 of Fig. 3.
Referring in detail to the drawing, the
nuiieral 1 designates the. well in which the
1)11umIP is to be used. This well may be pro- 60
vided with a casing 2 perforated as shown
through the oil bearing rock, or the well
mnay be uncased depending on the character
of the formation. In the well a tubing 3,
extending from the surface of the ground 65
down near the bottom of the well, is pro-
vided and the pumping apparatus proper
is secured to the lower end of this tubing.
The pumping appaaratus proper comprises
a main pump consisting of a working bar- 70
rel 4 and piston 5 and also of an auxiliary
pum"p consisting of a working barrel 6 and
piston 7. The working barrels 4 and 6 are
preferably formed, as shown, of one piece
and secured to the lower end of the tub- 75
ing 3. Likewise the pistons 5 and 7 are
preferahly formed of one piece and are se-
cured at their upper end to the hollow or
tubular sticker rod 8. This tubular sucker
rod is connected to and reciprocated by the 80
walking beam or lever 9. The piston 5 is
provided at its lower end with a valve 10
which may be of any approved construc-
tion. This valve opens upwardly and conm-
mnunicates through the passage 11. with the 85
interior of the tubular sucker rod 8. The
working barrel of the main pump is pro-
vided at its lower end with a valve 12 which
is shown as a ball check valve, but which
may be of any approved construction. A 90
port or passage 13 extends from the working
barrel of the upper or auxiliary pump down
through check valve 14 into the main work-
ing barrel. The leaning liquid,-which may
.be oil or water, employed' for washing out 95
the' sand. is supplied into the tubing 3 at
the surface of the well in any suitable way
as by means of a pipe 14. By reason of the
construction of the apparatus there is no
necessity that this liquid be flowed in inder 100
pressure.
The operation of the pump is as follows;
The cleaning fluid, oil or water preferably,
is flowed into the tubing through the pipe
14. When the sucker rodS is raised by the 105
lever 9 the oil to be pumped, together with
m(ore or less Safln. is <(rawl or flows into the
working barrel 4. When the pistons ap-
proach the tipper limit of their stroke, a re-
cess or port 15, formed in the surface of 110
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Andrews, Benjamin. Deep-Well Pump., patent, August 19, 1919; [Washington D.C.]. (https://texashistory.unt.edu/ark:/67531/metapth1258520/m1/2/: accessed June 22, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.